Ion Binding to Silicate-Based Minerals

The above examples show the general features of ion adsorption on phyUosili-cates, which can be applied also to other silicate minerals the involvement of edge groups, mainly aluminol, in the coordination with metal cations, and in the development of positive charges favoring anion binding. The quantitative treatment of these phenomena will be presented in Part HI. 

The ion-binding capacity of silicate minerals is mainly given by electrostatic interactions (i.e., ionic exchange), and there is relatively little specific binding, mainly through edge silanol and aluminol groups. 

In the next chapters, other important families of soil components, oxide minerals and organic matter, will be described the interaction between all of them will be treated in Chapter 14. 

Abd-AUah, S. M., O. M. El Hussaini, and R. M. Mahdy. 2007. Towards a more safe environment (2) Characterization of some clay sediments in Egypt for safe environmental applications. Australian Journal of Basic and Applied Sciences 1, no. 4 813-823. 

Amonette, J. E. 2002. Methods for determination of mineralogy and environmental availability. In Soil Mineralogy with Environmental Applications, ed. J. B. Dixon and D. G. Schulze, 153-197. Soil Science Society of America Book Series 7. Madison, WI Soil Science Society of America. 

---